PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

128C505H01Ammeter

Northrop Grumman Support Services Corp · NSN 6625-00-881-2274 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-881-2274 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-881-2274. Primary manufacturer part number: 128C505H01.
Features
  • Ammeter — FSC 6625
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
  • Mounting Facility Type and Quantity: 3 THREADED HOLE(S)
  • Meter Body Diameter Behind Mounting Flange: 2.210 INCHES NOMINAL IN
  • Measurement Range: +0.0 TO 50.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE
  • Style Designator: ROUND FLUSH MTG
  • Color: UNABLE TO DECODE
  • Meter Depth Behind Mounting Flange: 1.410 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-881-2274, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-881-2274
Primary Part Number128C505H01
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerNorthrop Grumman Support Services Corp
StatusACTIVE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Facility Type and Quantity3 THREADED HOLE(S)
Meter Body Diameter Behind Mounting Flange2.210 INCHES NOMINAL IN
Measurement Range+0.0 TO 50.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND FLUSH MTG
ColorUNABLE TO DECODE
Meter Depth Behind Mounting Flange1.410 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Scale Selection MethodTERMINAL
Circuit Current for Which DesignedAC
Circuit Attachment Method and Quantity2 SOLDER STUD
Features ProvidedMAGNETIC SHIELD
Overall Diameter2.695 INCHES NOMINAL IN
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Facility Type and Quantity3 THREADED HOLE(S)
Meter Body Diameter Behind Mounting Flange2.210 INCHES NOMINAL IN
Measurement Range+0.0 TO 50.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND FLUSH MTG
ColorUNABLE TO DECODE
Meter Depth Behind Mounting Flange1.410 INCHES NOMINAL IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Mounting Hole Diameter0.125 INCHES NOMINAL IN
Mounting Bolt Circle Diameter2.440 INCHES NOMINAL IN
Scale Selection MethodTERMINAL
Circuit Current for Which DesignedAC
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-649-4816
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeZN
Weight0.4200 lbs
Cube0.0746 cu ft
Verified Substitutes 8
Voltmeter
5998-01-137-996526-6 SUCCESSOR
Holder,electrical Card
Schroff Inc
6625-01-202-4639A81000 SUCCESSOR
Voltmeter
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
6625-01-269-414063A133507P2 SUCCESSOR
Ammeter
Yokogawa Corporation of America
Voltmeter
6625-00-106-7522 INTERCHANGEABLE
Voltmeter
6625-01-005-5132483659-1 INTERCHANGEABLE
Ammeter
Raytheon Company Dba Raytheon Co
5895-01-548-7740 INTERCHANGEABLE
Breakout Panel
Cross-Reference Index
Part NumberManufacturer
266 Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging (USA)
128C505H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
128C505H01 Custom Metering Company Inc (USA)
128C505H01 PRIMARY Northrop Grumman Support Services Corp (USA)
Related Parts
SUCCESSOR 6625-00-649-4816 Voltmeter
5998-01-137-9965SUCCESSOR
HOLDER,ELECTRICAL CARD
26-6
6625-01-202-4639SUCCESSOR
VOLTMETER
A81000
6625-01-269-4140SUCCESSOR
AMMETER
63A133507P2
6625-01-330-6519SUCCESSOR
VOLTMETER
6625-00-106-7522INTERCHANGEABLE
VOLTMETER
6625-01-005-5132INTERCHANGEABLE
AMMETER
483659-1
5895-01-548-7740INTERCHANGEABLE
BREAKOUT PANEL

Frequently Asked Questions

What is NSN 6625-00-881-2274?

NSN 6625-00-881-2274 is a Ammeter, manufactured by Northrop Grumman Support Services Corp, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-881-2274?

NSN 6625-00-881-2274 has 4 cross-referenced part numbers: 266 (Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging), 128C505H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 128C505H01 (Custom Metering Company Inc), 128C505H01 (Northrop Grumman Support Services Corp).

What NSN replaces 6625-00-881-2274?

There are 8 known substitutes for 6625-00-881-2274: 6625-00-649-4816, 5998-01-137-9965, 6625-01-202-4639 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 128C505H01?

Key specifications for 128C505H01: Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE; Mounting Facility Type and Quantity: 3 THREADED HOLE(S); Meter Body Diameter Behind Mounting Flange: 2.210 INCHES NOMINAL IN; Measurement Range: +0.0 TO 50.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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